Hi Hannah!I just realised that in my last post I appeared to be stating my idea as a fact - I didn't mean it to come across that way! :)I decided to run some extra tests:I ran a search of 'japanese imported food' from my iphone via edge network (not using my wifi) to ensure that my searches earlier did not affect the results. For me, the search did serve one ad for a car importing company. (our differing results may be due to the fact that I am searching from the UK and the ad was for a british company.)I then made several searches for imported cars before searching for 'japanese imported food'. This time the search returned several ads for importing cars.So yeah, I was wrong!Henry

Hi all,This issue isn't related to your previous searches. The car ads come up because of the first 2 keywords; 'japanese imported'.Without any previous searches I searched 'japanese imported donkeys' and received the same car import ads.- Henry

Great post Rand!I was wondering what effect this would have on a small site?My site is a week old, has only 4 pages, and receives 70 unique visits a day through organic searces. It has no trouble ranking due to a low amount of competition, but I want to add a new section which will have a large amount of competition and will have trouble getting external links to it. Should I use nofollows on the page that ranks well to every page apart from the high-competition page?Thanks!H (I'm a newbie to SEO!)

Fantastic article, love the diagrams!I've been lurking here at SEOmoz for a while now, but I figured I better post and say thanks once in a while! You guys are basicly teaching me SEO (Im an apprentice SEO at a company in the uk) and I really appreciate it. - Henry